Results 131 to 140 of about 6,013 (277)

Hydrothermal origin of metabolic phosphorylation

The FEBS Journal, EarlyView.
Serpentinizing hydrothermal vents are candidate sites for biochemical origins. They generate extremely reducing conditions, depositing phosphite (HPO32−) and transition metals, including palladium, in the native (zero‐valent) state. Schlikker et al.
Manon L. Schlikker, Nadja K. Hoffmann, Sabine Metzger, Jorge Moral‐Pombo, Harun Tüysüz, William F. Martin   +5 more
wiley   +1 more source

Solubility and Surface Complexation Studies of Apatites

, 2007
Apatites are a diverse class of phosphate minerals that are important in a great variety of natural and industrial processes. They are, for example, used as raw material in fertiliser production and in the remediation of metal-contaminated soils ...
Bengtsson, Åsa
core   +2 more sources

Influence of Laser Repetition Rate, Fluence and Spot Size on LA‐Q‐ICP‐MS/MS 87Sr/86Sr Precision: Insights from Apatites and Silicate Glasses

Geostandards and Geoanalytical Research, EarlyView.
Key Points Higher laser repetition rate, fluence and larger spot size increase signal intensity. Higher laser repetition rate produces overlaps in aerosolised particles, improving signal stability and precision. For Sr‐rich materials, moderate spot diameter (≤ 60 μm), 3 J cm‐2 fluence and ≥ 12 Hz repetition rate are recommended.
Edafe O. Ominigbo, David T. Murphy, Kate E. Jenkins, Mitchell de Bruyn, Karine H. Moromizato   +4 more
wiley   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook, Bruno V. Ribeiro, Janne Liebmann, Kai Rankenburg, Fred Jourdan, Ahmad Redaa, Jarred C. Lloyd, Thomas M. Belgrano, Carlos R. Corella Santa Cruz, Yujin Jegal, Julien Mercadier, Catherine Zimmermann, Jie Yu, Andreas Zametzer, Christopher L. Kirkland, Sarah E. Gilbert, Craig D. Storey, Luc S. Doucet, Isabelle Jones, Louisa Stokes, Thomas Zack, Delia Rösel, Denis Fougerouse, Jonas Kaempf, Priyanjan Datta, Hijas Hameed, Noreen J. Evans, Malcolm P. Roberts, Juraj Farkas, Stijn Glorie, Celia Mayers, R. Adam Frew, Sarah Al Odeh, Chloe E. Roche, Massimo Chiaradia, Alicia M. Cruz‐Uribe, Alan S. Collins, Andreas Karlsson, Anusha Shantha Kumara   +38 more
wiley   +1 more source

Laser-induced luminescence of rare-earth elements in natural fluor-apatites

, 1996
The luminescence spectra of naturally occurring fluor-apatites containing traces of rare-earth elements have been compared with synthetic fluor-apatites to which single rare-earth elements have been intentionally added.
Joergensen, Christian, Panczer, C., Gaft, M., Reisfeld, Renata, Boulon, G.   +4 more
core   +1 more source

Afghanite: A New Silicate‐Matrix Reference Material for In Situ Halogen and Sulfur Microanalysis

Geostandards and Geoanalytical Research, EarlyView.
Key Points A new silicate matrix reference material for in situ chlorine and sulfur determination. Homogeneous across all measured elements. No matrix effects for Cl when calibrating silicate matrices, in contrast to scapolite, which causes systematic Cl overestimation of up to 13%.
Sebastian Stumpf, Thomas Pettke, Johannes Hammerli, Michael A.W. Marks, Andreas Audétat, Jaime D. Barnes, Julia Dietrich, Renée J. Tamblyn   +7 more
wiley   +1 more source

Comparision between refinement results of apatites from Celia mine (Murcia, Spain) using X-ray diffraction powder and single-crystal data [PDF]

, 2001
The results of crystal structure refinement of apatites, Ca5(PO4)3(OH,F,Cl), found in Celia mine (Murcia, Spain) using X-ray powder diffraction single crystal data are compared.
Ochando, L.E., Moreno, R., Esteve, V. J., REVENTÓS, M.M., Amigó, J. M., Reventós, M. M., Amigo Descarrega, José María, ESTEVE, V.J.   +7 more
core  

Quantification of Sulfur Speciation in Apatites: Comparison of the XAS, XPS and EPMA Techniques

Geostandards and Geoanalytical Research, EarlyView.
Key Points Sulfur speciation in apatites has been determined by S K‐edge X‐ray absorption near‐edge structure (XANES) spectroscopy, S 2p X‐ray photoelectron spectroscopy (XPS) and electron probe microanalysis (EPMA). XANES provides the most sensitive and accurate quantification of sulfur speciation.
Yuzhou Feng, Yuanming Pan, Leo Ka Long Cheung, Reza Deevsalar, Jason Maley, Huayong Chen, Haoran Dou, Mohsen Shakouri, Qunfeng Xiao   +8 more
wiley   +1 more source

A Systematic Review Evaluating Methods for Diagnosis, Treatment and Prevention of Dental Erosions

International Journal of Dental Hygiene, EarlyView.
ABSTRACT Aim The aim of this systematic review was to investigate the quality of evidence for methods used to diagnose, restore and prevent dental erosions, by evaluating and summarising clinical controlled studies and in situ studies covering this field.
Maria Skalsky Jarkander, Helena Domeij, Irene Edebert, Alfheidur Astvaldsdottir, Margaret Grindefjord, Annsofi Johannsen   +5 more
wiley   +1 more source

Strontium coupling with sulphur in mouse bone apatites

Reviews on Advanced Materials Science
One of the key aspects of new advanced biomaterial development is to understand and design new compositions of selected components. The important idea for bioapatite-based materials is the substitution of Ca by other elements, such as strontium. Here, we
Turżańska Karolina, Gorzelak Mieczysław, Lasota Agnieszka, Szabelska Anna, Niezbecka-Zając Joanna, Łobacz Michał, Kłapeć Wojciech, Kuczumow Andrzej, Blicharski Tomasz, Gągała Jacek, Pawlicz Jarosław, Szcześniak Katarzyna, Drelich Małgorzata, Jabłoński Mirosław, Jarzębski Maciej   +14 more
doaj   +1 more source